Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1999-03-29
Phys.Rev. D60 (1999) 104021
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
13 pages, 3 figures
Scientific paper
10.1103/PhysRevD.60.104021
We develop a close-limit approximation to the head-on collision of two neutron stars similar to that used to treat the merger of black hole binaries . This approximation can serve as a useful benchmark test for future fully nonlinear studies. For neutron star binaries, the close-limit approximation involves assuming that the merged object can be approximated as a perturbed, stable neutron star during the ring-down phase of the coalescence. We introduce a prescription for the construction of initial data sets, discuss the physical plausibility of the various assumptions involved, and briefly investigate the character of the gravitational radiation produced during the merger. The numerical results show that several of the merged objects fluid pulsation modes are excited to a significant level.
Allen G. D.
Andersson Nils.
Kokkotas Kostas D.
Laguna Pablo
Pullin Jorge A.
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